Add init step to copy configuration from the 'hooks-rtc' plugin

The 'its-rtc' plugin replaces the 'hooks-rtc' plugin. The
configuration for both plugins only differs in the section names. If
the 'hooks-rtc' plugin was previously installed its configuration can
simply be copied for the 'its-rtc' plugin.

Change-Id: Icf8b47c2d94344e742e7e1b5b7f491256ee03c3c
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>